Poké Ball

From Wii Wiki

The Poké Ball (モンスターボール, Monsutābōru?, Monster Ball in original Japanese language versions) is a spherical contrivance in the Pokémon video games and anime television series that is used by Pokémon Trainers to capture new Pokémon and store them when not in use. The Poké Ball is also a central symbol of the franchise, and is often found on Pokémon-themed products